What are the diseases caused by sulphur dioxide?

Explanation

**Step-by-Step Solution:**

1. **Introduction to Sulfur Dioxide:**
- Sulfur dioxide (SO₂) is a colorless gas with a pungent odor. It is produced from various industrial processes and the burning of fossil fuels.

2. **Respiratory Diseases:**
- Sulfur dioxide is known to cause several respiratory diseases. The primary conditions include:
- **Asthma:** A chronic condition characterized by inflammation and narrowing of the airways, leading to difficulty in breathing.
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